There are several reasons why you might want to unregister a website, ranging from no longer having access to your website to a registration error saying your purchase code is already being used. In these instances, you can unregister your license from the attached domain by logging in to your My Avada account, navigating to the licenses page, and clicking the unlink icon between the domain type and the domain name.
Note that to do that, you should first register your My Avada account if you don’t already have one. Please ensure that you add the license to your account via the licenses page.